What is the most common type of stretching

Static Stretching

Explanation:

This is a common stretching that is executed by extending the targeted muscle group to its maximal point and holding it for 30 seconds or more.

since you have not provided the options here i   am going to give you general overview about hormone.hormone are actually the part of endocrine system in our body and produced by the endocrine glands. the hormones act like a chemical messenger   within human body. once produce by the glands they   travel through the blood stream and reach at specific or target tissue and organs   which result in control of our body function. the hormones are specific in their work and work on only the targeted tissue or organ   . with the of hormone endocrine system regulate the heart rate , metabolism, our mood and   growth as well as the development and even the sleeping cycle etc. they actually are the messenger for body cell and organs .

take a break move to stretching and slowly work back into physically exercising if the problem continues go to a doctor or physical therapist